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"NFHL" Web Map Service: Layer titles, map symbols, and symbol identification |
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Layer Title: Floodways |
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Floodways |
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Layer Title: Floodways (linear) |
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Structure Contains Floodway |
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Layer Title: Limit of Floodway |
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Limit of Floodway |
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Layer Title: Flood Hazard Zones (General) (draws in the scale range 1:300,000 and larger) |
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All A and V Zones |
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"Shaded X" Zone |
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Zone D |
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Layer Title: Flood Hazard Zones (General–med) (draws in the scale range 1:300,000 to 1:32,000) |
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All A and V Zones |
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"Shaded X" Zone |
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Zone D |
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Layer Title: Flood Hazard Zones (General–lrg) (draws in the scale range 1:32,000 and larger) |
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All A and V Zones |
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"Shaded X" Zone |
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Zone D |
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Layer Title: Flood Hazard Zones (linear)
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Structure Contains 1 pct Annual Chance Flood |
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Structure Contains Zone Shaded X |
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Layer Title: Flood Hazard Zones (Detailed) |
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Zone VE |
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Zone V |
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Zone AE |
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Zone A |
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Zone AH |
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Zone AO |
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Zone AR |
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Zone A99 |
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Zone Shaded X |
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Zone D |
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Layer Title: Flood Hazards Zone Boundaries |
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Limit of 1 percent Annual Chance Flood |
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Limit of Shaded X Zone |
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Breaks among 1-percent Annual Chance Flood Zones
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Apparent Limit |
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Limit of Study or Limit of Detailed Study |
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Flowage Encroachment |
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Layer Title: CBRS and OPA Units |
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CBRS or OPA Units |
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Layer Title: Base Flood Elevation (symbolized by vertical datum and labeled by elevation) |
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Elevation Measured Using the North American Vertical Datum of 1988 (NAVD 88)
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Elevation Measured Using the National Geodetic Vertical Datum of 1929 (NGVD 29) |
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Elevation Measured Using Another Vertical Datum (for example mean sea level) |
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Elevation in Feet |
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Elevation in Meters |
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Elevation in Other Units |
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Layer Title: Cross Sections (labeled by identifier used in the Flood Insurance Study) |
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Cross Sections |
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Cross Section Label |
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Layer Title: Coastal Transects (labeled by identifier used in the Flood Insurance Study) |
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Coastal Transects |
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Coastal Transect Label |
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Layer Title: Bench Marks (labeled by identifier) |
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Bench Marks |
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Identifier |
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Layer Title: River Distance Markers (labeled by river mark number) |
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River Distance Markers |
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Identifier |
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Layer Title: General Structures |
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Aqueduct, Canal, or Pipeline
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Bridge |
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Dam, Fish, Ladder, or Lock |
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Dike, Levee, or Seawall |
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Channel, Culvert, or Storm Sewer |
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Channel, Culvert, or Storm Sewer contains a floodway |
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Channel, Culvert, or Storm Sewer contains a 1‑percent annual chance flood |
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Channel, Culvert, or Storm Sewer contains Shaded X zone |
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All Other Structures |
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Layer Title: Jurisdiction Boundaries |
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International |
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State |
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County |
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Corporate |
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Special District (for example, levee or utility district) |
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Public Lands or Reservations (for example, forest, park, or military) |
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Layer Title: Jurisdiction Names |
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Jurisdiction Name |
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Layer Title: Jurisdiction Names 2 |
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Secondary Jurisdiction Name |
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Layer Title: DFIRM Panels (detailed) |
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FIRM Boundary |
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FIRM Panel Number (full) |
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Layer Title: LOMR's |
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LOMR Boundary |
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LOMR Case Number |
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Layer Title: LOMA and LOMR-F |
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LOMA and LOMR-F (location approximate) |
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LOMA and LOMR-F Case Number |
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Layer Title: Flood Map Panels (national) |
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National Flood Insurance Program (NFIP) Map Boundary |
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Map Panel Number |
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Layer Title: Q3 Flood Hazards (to be phased out) |
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Special Flood Hazard Areas |
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Layer Title: Q3 Flood Hazards (red) |
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Special Flood Hazard Areas |
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Layer Title: Streets (from DFIRM) |
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Primary Road and Airport |
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Secondary Road |
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Other Road |
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Railroad |
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Feature Name |
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Layer Title: Streams |
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Streams |
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Stream Name |
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Layer Title: Water Bodies |
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Water Bodies |
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Water Body Name |
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Layer Title: PLSS |
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Public Land Survey System (PLSS) township |
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PLSS Section |
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Layer Title: USGS Quads |
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USGS Topo Map Boundary |
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USGS Topo Map Name |
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Layer Title: Watershed (HUC) |
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Subbasin Boundary (HUC-8) |
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Subbasin Hydrologic Unit Code (HUC) |
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Layer Title: Flood Data Availability (county-by-county digital data availability) |
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Digital Flood Insurance Rate Map (DFIRM) Data Available |
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Partial DFIRM Available |
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Q3 Flood Hazard Data Available |
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Layer Title: Preliminary Maps Issued (county-by-county status of data in later stages of production. These data are not in the web map service.) |
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Preliminary Maps Issued |
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Layer Title: DFIRM Data Availability (community-by-community digital data availability) |
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Digital Flood Insurance Rate Map (DFIRM) Data Available |
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Layer Title: Flood Map Availability (paper and scanned maps available) |
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National Flood Insurance Program (NFIP) Map Available |
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Layer Title: No DFIRM mask (used with other layers to show areas where data are not available) |
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No DFIRM data available (mask) |
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Layer Title: Flood Hazard Zone mask (used with other layers to provide Zone X and Open Water) |
(white area with no boundary) |
Flood hazard zone (mask) |
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